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Total Questions : 282 | Page 25 of 29 pages
Question 241. A human cDNA library
  1.    None of these
  2.    contains DNA for specific human proteins
  3.    contains DNA for virtually all of the human proteins in vectors
  4.    cannot be used to obtain human genes because it would be radioactive
 Discuss Question
Answer: Option C. -> contains DNA for virtually all of the human proteins in vectors
Question 242. Which of the following can be diagnosed by amniocentesis?
  1.    Down's syndrome
  2.    Cystic Fibrosis
  3.    All of these
  4.    Sickle cell anemia
 Discuss Question
Answer: Option C. -> All of these
Question 243.  Which of these restriction enzymes produce blunt ends?
  1.    SaII
  2.    EcoRV
  3.    XhoI
  4.    HindIII
 Discuss Question
Answer: Option B. -> EcoRV
Question 244.  The RP13 gene of chromosome 17 codes for a protein __________ .
  1.    involved in glucose transport
  2.    that is a component of hair and nails
  3.    involved in eye development
  4.    involved in the determination of personality
 Discuss Question
Answer: Option C. -> involved in eye development
Question 245.  Which of the following is correct in terms of determination of location of genetic traits?
  1.    Known protein coding sequences are too far apart to allow linkage determination for most new genes
  2.    Restriction sites allow DNAs to be digested
  3.    Protein-coding genes are always associated with a restriction pattern
  4.    None of the above
 Discuss Question
Answer: Option A. -> Known protein coding sequences are too far apart to allow linkage determination for most new genes
Question 246.  Isoschizomers recognize
  1.    same recognition sequence but different recognition site
  2.    same recognition site and recognition sequence
  3.    same recognition site and different recognition sequence
  4.    different recognition site and different recognition sequence
 Discuss Question
Answer: Option B. -> same recognition site and recognition sequence
Question 247.  Restriction enzymes are named for
  1.    the person who discovered
  2.    the bacterium they are derived from
  3.    the viral DNA that they attack
  4.    none of the above
 Discuss Question
Answer: Option B. -> the bacterium they are derived from
Question 248.  When populations are small, gene frequencies can change from generation to generation and some alleles may become fixed in a population. This is called __________ .
  1.    assortative mating
  2.    inbreeding
  3.    heterosis
  4.    genetic drift
 Discuss Question
Answer: Option D. -> genetic drift
Question 249.  Which of these genes codes for a protein that plays a role in white blood cell function?
  1.    DCP1
  2.    MPO
  3.    GLUT4
  4.    RP13
 Discuss Question
Answer: Option B. -> MPO
Question 250.  
In gel electrophoresis, DNA molecules migrate from __________ to __________ ends of the gel.
  1.    negative ... positive
  2.    basic ... acidic
  3.    long ... short
  4.    positive to negative
 Discuss Question
Answer: Option A. -> negative ... positive

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